Question

please solve this questionL
and step by step explanation
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Answer 1

Answer:

3. -7/12 * -20/7 = 140/84 =5/3

4. 30000+4000+500+60+2

5. 3x^2y

5let the no. be x

3x+15=42

3x=42−15

3x=  27

x =9

Answer 2

Answer:

here's your answer and hope it's helpful